An Appliance to Expedite and Facilitate the Correct Setting of Fuzes of Projectiles.

摘要

13,756. Shore, B., and Clark, C. T. June 18. Projectile fuses. - Relates to fuse - setting machines of the kind mounted on a supporting- ring which is adapted to be locked in the zero position on the fuse, and consists in mounting on the supporting-ring an adjustable index member, and a rotary setting-member adapted to co-operate with the index, and carrying- means for setting the timing-ring, this means being so constructed that, no matter where the pin on the timing-ring happens to rest initially with respect to the fuse scale, the ring may be correctly set by rotating the setting-member first in the clockwise sense, and then in the counterclockwise sense, as far as possible. In the form shown in Fig. 1, the fuse-setter comprises a circular base a, Fig. 1, graduated round its periphery, and a rotary head d engaging an annular recess b in the base a. In a peripheral groove f of the base slides a carrier g, with which moves an index-plate k. This index may be clamped by a nut m opposite any desired graduation of the scale. When the index has been thus set, the fuse-setter is placed on the fuse and rotated until a stud n on the base a enters a recess on the fuse and locks the two together. On rotating the head d in a counterclockwise sense in the base, a stop p in an annular channel o in the interior of the head d engages the usual pin on the time-ring of the fuse, and rotates the ring until a projection q on the head d abuts against a stop r on the plate k. The fuse is then set. If the pin on the time-ring happens initially to rest at a graduation of the fuse scale higher than that to which it is to be set, a clockwise rotation of the head d precedes the counter-clockwise rotation, so that the pin on the time-ring may be displaced by the reverse side of the stop p until it lies opposite a graduation lower than that to which it is to be set. An auxiliary index slide may be mounted on the main slide k for fine adjustment. A box spanner may be rotatably mounted on the head d in order to manipulate the lock-nuts of fuses provided with such.